It used to be that when you bought a roll of film, it included a chart just like this.

My first new 35mm camera (a Retina S1) had one buit right in, instead of a meter.

Matt

“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2